Crystalline powder comprises high-quality cement, serves as a chemically active waterproofing treatment for concrete, delivering exceptional performance. When mixed with water and applied as a brush coat, this powder permeates deeply into the capillaries of the concrete, forming billions of needle-like crystals. These crystals effectively block pores, voids and micro-cracks in the concrete, providing comprehensive protection. Notably, it is effective against substances with high contact pH values. The product offers numerous features and benefits, such as becoming an integral part of the concrete, applicability from either the positive or negative side and resistance to hydrostatic pressure. It can seal hairline cracks, it is non-toxic, easy to apply with a brush and can be applied over green concrete. Additionally, it resists chemical attacks like chloride and sulphate, while allowing concrete to breathe. Its deep penetration seals capillary tracts and shrinkage cracks, ensuring long-lasting waterproofing performance.